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Finding the Fourth Proportional to 154,694.88, 231,909.97 and 70,424.91

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Solution

The fourth proportional to 154,694.88, 231,909.97 and 70,424.91 is: 105,577.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,694.88 : 231,909.97 = 70,424.91 : x
  2. Step 2: Convert to fraction form
    154,694.88/231,909.97 = 70,424.91/x
  3. Step 3: Cross multiply
    154,694.88x = 231,909.97 × 70,424.91
  4. Step 4: Simplify right side
    154,694.88x = 16,332,238,765.35
  5. Step 5: Solve for x
    x = 16,332,238,765.35/154,694.88
  6. Step 6: Final answer
    x = 105,577.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.